As a paid user, I am very disappointed by the gpt5.5 release, not because it's not good, it's very much a frontier model. But, rate limits are so extremely tight that 3-4 prompts on medium reasoning means your 5 hours window is gone. Openai is basically going on Anthropic path.
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Introducing GPT-5.5
A new class of intelligence for real work and powering agents, built to understand complex goals, use tools, check its work, and carry more tasks through to completion. It marks a new way of getting computer work done.
Now available in ChatGPT and Codex.
GPT-5.5 delivers this step up in intelligence without compromising on speed.
GPT-5.5 matches GPT-5.4 per-token latency in real-world serving, while performing better across nearly every evaluation we measured.
It also uses significantly fewer tokens to complete the same Codex tasks, making it more efficient as well as more capable.
current favorite model: MiMo V2.5 pro. fast enough, does not get stuck in its own thinking loop, long context is reliable while being more intelligent than glm 5.1 (multimodelity should make this model a true opus rival)